1. An absolute calibration of type IA supernovae and the value of H(0)
- Author
-
Mark S. Shure, Michael E. Ressler, and Michael J. Pierce
- Subjects
Physics ,Spiral galaxy ,Astrophysics::High Energy Astrophysical Phenomena ,Cosmic distance ladder ,Astrophysics::Instrumentation and Methods for Astrophysics ,Astronomy ,Astronomy and Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,Galaxy ,Photometry (optics) ,Distance modulus ,Supernova ,Space and Planetary Science ,Astrophysics::Solar and Stellar Astrophysics ,Red supergiant ,Supergiant ,Astrophysics::Galaxy Astrophysics - Abstract
I-band CCD photometry and K-band NICMOS photometry of the brightest red supergiants in IC 4182 (UGC 8188) are presented in order to estimate the distance to this galaxy. Assuming that the brightest red supergiants are «standard candles» and adopting an absolute calibration of the brightest red supergiants, a distance modulus of 27.0 ± 0.2 mag (2.5 ± 0.3 Mpc) is obtained. This estimate is more than a magnitude closer in distance modulus than using photographic V-band photometry and a similar absolute calibration
- Published
- 1992